Gut Oheimb, Manor house in Porta Westfalica, Germany.

Gut Oheimb is a former manor house in the Holzhausen district of Porta Westfalica, south of the Wesergebirge and east of the Weser. A Herrenhaus was built on the site in 1690; the estate once covered 800 Morgen, 350 of them woodland. Some old trees survive, but the grounds are now heavily overgrown, and the family burial plot of the von Schellersheim family of Rittergut Eisbergen lies at the western edge of the park.

The estate was first documented in 1099, when the noblewoman Reinmildes received the episcopal farm for life; in 1170 Bishop Werner of Minden bought it back from her daughter Reinmuldis, abbess of Wunstorf. From 1620 Johann von Grone is recorded as owner, and after the last male Grone died in 1772 it passed to Charlotte Lucie, wife of Colonel Georg Wilhelm von Oheimb, whose family held it until the mid-20th century. Alexander Wilhelm Heinrich von Oheimb, owner from 1868 and district administrator of Minden, pushed for road building and schools and initiated the Kaiser Wilhelm Monument, giving the opening speech on 18 October 1896 in the presence of the imperial couple. In the last years of the Second World War the estate served as a military hospital, then as a private clinic; the German Red Cross bought the buildings in 1952.

The estate's names record its owners: it was called Grauer Hof, Gronen Hof and Gut Holzhausen before taking the name of the von Oheimb family, who held it from 1772 until the mid-20th century. Charlotte Lucie von Grone brought it to the family through her marriage to Colonel Georg Wilhelm von Oheimb. The family grave of the von Schellersheim of Rittergut Eisbergen lies at the western edge of the park.

Gut Oheimb is private property of the Habitat Seniorenwohnheime retirement-home operator based in Bad Sassendorf and is not open to the public, so visits are limited to the outside. The local community association has taken over care of the park; some old trees survive, but the grounds are otherwise heavily overgrown. The estate lies south of the Wesergebirge and east of the Weser in the Holzhausen district of Porta Westfalica.

The Kaiser Wilhelm Monument on the Wittekindsberg was initiated by Alexander Wilhelm Heinrich von Oheimb, owner of Gut Oheimb from 1868 and Landrat of the Kreis Minden. He gave the opening speech there on 18 October 1896 in the presence of the imperial couple. The estate itself had passed to the von Oheimb family through Charlotte Lucie von Grone, who married Colonel Georg Wilhelm von Oheimb after 1772.